Fair Value Measurements

12 Months Ended

Oct. 31, 2016

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

As of the dates indicated, the following tables summarizes the fair value of assets and liabilities that were recorded at fair value on a recurring basis (in thousands):

	October 31, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	625,277	$	—	$	—	$	625,277
U.S. government obligations	—		350,431		—		350,431
Commercial paper	—		69,959		—		69,959
Foreign currency forward contracts	—		175		—		175
Total assets measured at fair value	$	625,277	$	420,565	$	—	$	1,045,842
Liabilities:
Foreign currency forward contracts	$	—	$	1,396	$	—	$	1,396
Forward starting interest rate swaps	—		5,967		—		5,967
Total liabilities measured at fair value	$	—	$	7,363	$	—	$	7,363

	October 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	642,073	$	—	$	—	$	642,073
U.S. government obligations	—		205,223		—		205,223
Commercial paper	—		74,983		—		74,983
Foreign currency forward contracts	—		89		—		89
Total assets measured at fair value	$	642,073	$	280,295	$	—	$	922,368
Liabilities:
Foreign currency forward contracts	$	—	$	512	$	—	$	512
Forward starting interest rate swap	—		5,522		—		5,522
Total liabilities measured at fair value	$	—	$	6,034	$	—	$	6,034

As of the dates indicated, the assets and liabilities above were presented on Ciena’s Consolidated Balance Sheet as follows (in thousands):

	October 31, 2016
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	625,277	$	54,970	$	—	$	680,247
Short-term investments	—		275,248		—		275,248
Prepaid expenses and other	—		175		—		175
Long-term investments	—		90,172		—		90,172
Total assets measured at fair value	$	625,277	$	420,565	$	—	$	1,045,842
Liabilities:
Accrued liabilities	$	—	$	1,396	$	—	$	1,396
Other long-term obligations	—		5,967		—		5,967
Total liabilities measured at fair value	$	—	$	7,363	$	—	$	7,363

	October 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	642,073	$	49,994	$	—	$	692,067
Short-term investments	—		135,107		—		135,107
Prepaid expenses and other	—		89		—		89
Long-term investments	—		95,105		—		95,105
Total assets measured at fair value	$	642,073	$	280,295	$	—	$	922,368
Liabilities:
Accrued liabilities	$	—	$	512	$	—	$	512
Other long-term obligations	—		5,522		—		5,522
Total liabilities measured at fair value	$	—	$	6,034	$	—	$	6,034

Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.